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CVE-2025-15079 (GCVE-0-2025-15079)

Vulnerability from cvelistv5 – Published: 2026-01-08 10:08 – Updated: 2026-09-15 06:02
VLAI
Title
libssh global known_hosts override
Summary
When doing SSH-based transfers using either SCP or SFTP, and setting the known_hosts file, libcurl could still mistakenly accept connecting to hosts *not present* in the specified file if they were added as recognized in the libssh *global* known_hosts file.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-08 14:45 UTC
CWE
  • CWE-297 - Improper Validation of Certificate with Host Mismatch
Impacted products
Vendor Product Version CPE status
curl curl Affected: 7.58.0 , < 8.14.2 (semver)
Affected: 8.15.0 , < 8.16.1 (semver)
Affected: 8.17.0 , < 8.18.0 (semver)
guessed Create a notification for this product.
curl curl Affected: c92d2e14cfb0db662f958effd2ac86f995cf1b5a , < adca486c125d9a6d9565b9607a19dce803a8b479 (git)
guessed Create a notification for this product.
curl curl Affected: 8.17.0
Affected: 8.16.0
Affected: 8.15.0
Affected: 8.14.1
Affected: 8.14.0
Affected: 8.13.0
Affected: 8.12.1
Affected: 8.12.0
Affected: 8.11.1
Affected: 8.11.0
Affected: 8.10.1
Affected: 8.10.0
Affected: 8.9.1
Affected: 8.9.0
Affected: 8.8.0
Affected: 8.7.1
Affected: 8.7.0
Affected: 8.6.0
Affected: 8.5.0
Affected: 8.4.0
Affected: 8.3.0
Affected: 8.2.1
Affected: 8.2.0
Affected: 8.1.2
Affected: 8.1.1
Affected: 8.1.0
Affected: 8.0.1
Affected: 8.0.0
Affected: 7.88.1
Affected: 7.88.0
Affected: 7.87.0
Affected: 7.86.0
Affected: 7.85.0
Affected: 7.84.0
Affected: 7.83.1
Affected: 7.83.0
Affected: 7.82.0
Affected: 7.81.0
Affected: 7.80.0
Affected: 7.79.1
Affected: 7.79.0
Affected: 7.78.0
Affected: 7.77.0
Affected: 7.76.1
Affected: 7.76.0
Affected: 7.75.0
Affected: 7.74.0
Affected: 7.73.0
Affected: 7.72.0
Affected: 7.71.1
Affected: 7.71.0
Affected: 7.70.0
Affected: 7.69.1
Affected: 7.69.0
Affected: 7.68.0
Affected: 7.67.0
Affected: 7.66.0
Affected: 7.65.3
Affected: 7.65.2
Affected: 7.65.1
Affected: 7.65.0
Affected: 7.64.1
Affected: 7.64.0
Affected: 7.63.0
Affected: 7.62.0
Affected: 7.61.1
Affected: 7.61.0
Affected: 7.60.0
Affected: 7.59.0
Affected: 7.58.0
guessed Create a notification for this product.
Show details on NVD website

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              }
            ],
            "aliases": [
              "CVE-2025-15079"
            ],
            "credits": [
              {
                "name": "Harry Sintonen",
                "type": "finder"
              },
              {
                "name": "Daniel Stenberg",
                "type": "remediation developer"
              }
            ],
            "database_specific": {
              "CWE": {
                "desc": "Improper Validation of Certificate with Host Mismatch",
                "id": "CWE-297"
              },
              "URL": "https://curl.se/docs/CVE-2025-15079.json",
              "affects": "both",
              "award": {
                "amount": "505",
                "currency": "USD"
              },
              "issue": "https://hackerone.com/reports/3477116",
              "last_affected": "8.17.0",
              "package": "curl",
              "severity": "Low",
              "www": "https://curl.se/docs/CVE-2025-15079.html"
            },
            "details": "When doing SSH-based transfers using either SCP or SFTP, and setting the\nknown_hosts file, libcurl could still mistakenly accept connecting to hosts\n*not present* in the specified file if they were added as recognized in the\nlibssh *global* known_hosts file.",
            "id": "CURL-CVE-2025-15079",
            "modified": "2026-09-07T10:34:51.00Z",
            "published": "2026-01-07T08:00:00.00Z",
            "schema_version": "1.5.0",
            "summary": "libssh global known_hosts override"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "assignerShortName": "curl",
        "cveId": "CVE-2025-15079",
        "datePublished": "2026-01-08T10:08:13.410Z",
        "dateReserved": "2025-12-24T22:18:18.481Z",
        "dateUpdated": "2026-09-15T06:02:32.246Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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